Adapt or Die
Currencies should not outlive their usefulness
There's an established currency (or structure, or rule, or policy) that no longer seems to be fulfilling its original intent.
Adapt the currency to new needs, problems or goals, or wind it down. Alter redeemability options, reach newly targeted audiences...
Some currencies are created to fulfill short-term goals (deli dollars), Also, currencies may help establish longer-term patterns of flow but often, after the pump has been primed by a formalized currency, the flow pattterns become natural: the added task of managing a formal shystem can actually impair the flows once they're naturally occurring